1987] 
West-Eberhard — Xenorhynchium nitidulum 
323 
References 
Bequaert, J. 
1918. A revision of the Vespidae of the Belgian Congo based on the collection 
of the American Museum Congo Expedition, with a list of Ethiopian 
diplopterous wasps. Bull. Am. Mus. Nat. Hist. 39: 1-384. 
Dutt, G. R. 
1912. Life histories of Indian insects (Hymenoptera). Mem. Dep. Agric. India 
(Ent. Ser.). 4: 183-267. 
Evans, H. E. 
1966. The Comparative Ethology and Evolution of the Sand Wasps. Harvard 
University Press, Cambridge. 
Evans, H. E., and M. J. West-Eberhard. 
1970. The Wasps. Univ. Michigan Press, Ann Arbor. 
Horne, C. 
1912. Notes on the habits of some hymenopterous insects from the northwest 
provinces of India. Trans. Zool. Soc. London, 7: 161-196. 
Iseley, D. 
1913. The biology of some Kansas Eumenidae. Kans. Univ. Sc. Bull., 8: 
235-309. 
IWATA, KUNIO. 
1976. Behavior of social wasps. IN Evolution of Instinct: Comparative Ethol- 
ogy of Hymenoptera. Amerind Publishing Co, New Delhi. 
Richards, O. W. 
1971. The biology of the social wasps (Hymenoptera, Vespidae) Biol Rev., 46: 
483-528. 
VECHT, J. VAN DER. 
1963. Studies on Indo-Australian and East-Asiatic Eumenidae (Hymenoptera, 
Vespoidea). Zool. Verh. Leiden, no. 60: 3-113. 
West-Eberhard, M. J. 
1969. The social biology of polistine wasps. Univ. Mich. Mus. Zool. Misc. 
Publ. 140: 1-101. 
1979. Polygyny and the evolution of social behavior in wasps. J. Kansas 
Entomol. Soc. 51(4): 832-856. 
Wheeler, W. M. 
1928. The social insects: their origin and evolution. Kegan, Paul, Trench, 
Trubner and Co. Ltd, London. 
